Abstract: The present disclosure relates to a laundry treatment machine. A laundry treatment machine comprises: an inverter to convert the DC voltage from the converter into alternating current (AC) voltage by a switching operation and to output the converted AC voltage to a motor; and a controller that controls such that, while a washing tub motor is rotating at a constant speed, a drain motor operates in a first period during which the speed of the drain motor increases, a second period during which the speed of the drain motor decreases after the first period, and a third period during which the speed of the drain motor decreases after the second period, wherein a rising slope in the second period is less than a falling slope in the third period. Accordingly, a speed ripple of the drain motor may be reduced.

Abstract: A washing machine has a rotatable drum for receiving items to be washed and a tub in which the drum is mounted for rotation. A first water sensor is located at or towards the bottom of the tub and is arranged to measure the level of water collected at the bottom of the tub. A second water sensor is located at a part of the tub away from the first water sensor and measures the amount of water being thrown out of the drum as the drum rotates. The drum is rotated in accordance with a difference of the outputs of the sensors.

Abstract: The present disclosure provides a laundry treating apparatus. In one embodiment, the apparatus includes a tub for receiving washing-water therein; a first drum rotatably disposed within the tub; a second drum disposed in the first drum so as to be attachable or detachable to or from the first drum, wherein washing of a laundry by the second drum is performed separately from washing of a laundry by the first drum; and a guide rib projected from an upper portion of a inner circumferential face of the second drum toward a center of the second drum, wherein the guide rib is constructed to guide wash-water rising up via a rotational force of the second drum to flow toward a center of the second drum and then to fall down.

Abstract: A desiccant wheel for a dehumidifier includes a band of material around an outer circumference of the desiccant wheel and a plurality of sprocket holes formed in the band of material. The plurality of sprocket holes are configured for coupling the desiccant wheel to a sprocket. The desiccant wheel is configured to rotate when the sprocket is rotated by a motor.

Abstract: A laundry treating appliance for treating laundry according to an automatic cycle of operation, comprising a basket defining a treating chamber for receiving laundry to be washed. The basket has multiple perforations through which liquid may pass. A blade can be rotated about the exterior of the basket creating a suction force acting on the perforations to draw liquid from the treating chamber through the perforations.

Abstract: A method of estimating a water extraction profile in a laundry treating appliance includes accelerating rotation of the drum during a water extraction cycle, determining, during the accelerating rotation, a torque of the motor, an acceleration of the drum, a speed of the drum, and/or an angular position of the drum, and estimating with a parameter estimator, at multiple times during the accelerating rotation, inertia of a laundry load, based on the torque, acceleration, speed, and/or angular position of the drum to establish multiple inertia values. A water extraction profile is then estimated based on the inertia values.

Abstract: A method, system, and apparatus are disclosed for a complex shape structure for liquid lithium first walls of fusion power reactor environments. In particular, the method involves installing at least one tile on the surface area of the internal walls of the reactor chamber. The tile(s) is manufactured from a high-temperature resistant, porous open-cell material. The method further involves flowing liquid lithium into the tile(s). Further, the method involves circulating the liquid lithium throughout the interior network of the tile(s) to allow for the liquid lithium to reach the external surface of the tile(s) that faces the interior of the reactor chamber. In addition, the method involves outputting the circulated liquid lithium from the tile(s). In one or more embodiments, the reactor chamber is employed in a fusion reactor. In some embodiments, the tile is manufactured from a ceramic material or a metallic foam.

Abstract: A clothes washer is provided comprising one or more power consuming functions and a controller in signal communication with an associated utility. The controller can receive and process a signal from the associated utility indicative of current state of an associated utility. The controller operates the clothes washer in one of a plurality of operating modes, including at least a normal operating mode and an energy savings mode in response to the received signal. The controller is configured to change the power consuming functions by modifying the spin cycle to achieve a lower remaining moisture content in the clothes load prior to going into a dryer, thus reducing overall total energy consumption to completely wash and dry a clothes load.

Abstract: The present invention relates to a method for controlling a laundry treating apparatus including a first course for rotating washing water and laundry which are loaded in a drum, in a state where a drainage pump is off and a first spinning course for eliminating water elements from the laundry loaded in the drum after the first course, accelerating the drum, wherein the first spinning course comprises a preparing course for rotating the drum, in a state where the drainage pump is off and a drainage course for draining the washing water inside the drum, in a state where the drainage pump is off.

Abstract: A laundry treating appliance has a rotatable drum at least partially defining a treating chamber for receiving a laundry load for treatment according to at least one cycle of operation and operated such that the extraction of liquid from the laundry load is controlled based on the inertia of the laundry load so that the total energy usage by the laundry treating appliance and a laundry drying appliance with which it is operably coupled may be minimized.

Abstract: Methods and systems that detect high resonance frequencies as a laundering device (e.g., a washer or dryer) is in a spin cycle, and avoids those frequencies, as well as a band around those frequencies (e.g., 75 rpm on either side of the resonant frequency), in subsequent spin cycles, is described. Aspects of the invention also provide for detecting whether the setup of the laundering device has changed (e.g., resulting from a change in physical location or setup), and provides for the recalibration of a resonance frequency or known high vibration speed when a new setup is detected. Aspects of the invention recognize that solutions to minimize vibration are unnecessary. It is not necessary to optimize or minimize vibration in order for a laundry device to work properly, but rather it is sufficient to ensure that the laundry device does not spin the drum at a speed that causes excessive vibration.

Abstract: A washing machine includes a rear panel mounted on a wall; a tub supported by the rear panel and configured to contain wash water; a front panel having an opening therein and on or in front of the tub; a rotatable drum in the tub; a driving unit providing power to the drum; a cover on the rear panel so as to cover the tub and the front panel; a water supply device supplying wash water to the tub; and a drain device having a drain filter in a wash water discharge path, the drain filter being configured to filter foreign matter in the wash water.

Abstract: A method and apparatus for operating a laundry treating appliance having a tub and a rotatably wash basket, the method comprising draining at least a portion of a wash liquid, accelerating the wash basket, enabling the wash basket to decelerate and supplying a rinse liquid during at least a portion of the deceleration of the wash basket.

Abstract: A washing machine appliance is provided. The washing machine appliance includes a wash basket rotatably mounted within a wash tub and a drain pump for removing liquid from the wash tub. During a spin cycle of the washing machine appliance, the drain pump may be activated during an acceleration portion of the spin cycle. Further, the drain pump may be operated at a first duty cycle for a first portion of a dwell step of the spin cycle and at a second duty cycle for a second portion of the dwell step of the spin cycle.

Abstract: A washing machine including a rotational drum into which laundry is input, a water tub to perform a washing operation using bubbles, a water supply device to supply water, a detergent liquid supply device to supply detergent liquid, an air supply device to supply air required for the generation of the bubbles, and a controller to control the water supply device and the detergent liquid supply device to supply the water and the detergent liquid into a space between the rotational drum and the tub, to control the air supply device to generate the bubbles by supplying air to detergent water as a mixture of the water and the detergent liquid, to supply the bubbles into the laundry, and to perform the washing operation using the bubbles.

Abstract: A washing/drying machine according to the present invention is capable of efficiently performing a drying operation to reduce a drying period. The washing/drying machine includes a tank (11) for storing used water, and the water is circulated from the tank (11) for dehumidification of air circulated through a drying air duct (20). Since the water is circulated from the tank (11), a great amount of water can be supplied as dehumidification water for higher dehumidification efficiency. The amount of the circulated water (the amount of cooling water (dehumidification water)) is reduced in a first half of a drying process, and increased in a second half of the drying process. As a result, the drying efficiency is improved during the drying operation, thereby reducing the drying period.

Abstract: A drum-type washing machine that includes a program controller, a drum rotatably mounted in a detergent solution tub, a detergent solution discharge system disposed at a base of the detergent solution tub having a detergent solution drain pump, a sensor for determining a foam level and/or a negative time gradient of a liquid/air mixture contained in the detergent solution tub, a drive motor for the drum that adjusts a rotation of the drum to eliminate foam in the drum-type washing machine, and a water supply system that adds a small volume of water continuously or discontinuously if foam is detected by the sensor during the run-up to spin speed of the drum with the detergent solution drain pump switched on continuously or discontinuously.

Abstract: A device and method for controlling a drainage pump of a washing machine. The drainage pump is powered by a synchronous motor that is connected to a mains voltage bus by a switch. During one or more stages of a washing program the switch is operated to apply in each half cycle of the mains voltage a delay time from the zero setting of the mains voltage to cause the motor to operate in a cut-wave mode.

Abstract: A washing appliance, particularly a laundry washer or a dishwasher, comprises a tank (2) for loading washing liquor and items to be washed and control means adapted to carry out a predetermined washing program. It further comprises an inclined drain surface (2a) for collecting a portion of the washing liquor and means (6, 8, 9, 10, 11, 12) for assessing properties of such liquid on the basis of the drainage behavior thereof.

Abstract: A washing machine which prevents wrinkling of laundry in washing, rinsing, and dehydrating operations, and a method for controlling the same. The method includes determining whether a wrinkle preventing course is selected, performing a washing operation by supplying washing water to a water level designated according to an amount of the laundry disposed in the washing machine, when it is determined that the wrinkle preventing course is selected, and measuring a time of the washing operation, and additionally supplying the washing water at a designated time before the washing of the laundry is completed.

Abstract: A steam generator for a washing machine comprises: a hermetic container provided with a water supply port for supplying water and a steam exhaustion port for exhausting steam; a heater arranged in the hermetic container for heating water supplied into the hermetic container; and a drain unit for draining residual water inside of the hermetic container outwardly. According to this, residual water inside of the steam generator is outwardly exhausted thus to maintain cleanness of the steam generator. Also, the drain unit using a siphon principle is installed thus to naturally exhaust residual water inside of the steam generator without an additional valve device, thereby reducing a fabrication cost.

Abstract: Disclosed herein are a washing machine that performs a rinsing operation while rotating a drum at a predetermined RPM without stopping the drum after spin-drying and a rinsing control method thereof The washing machine includes a drum to receive laundry and a motor to rotate the drum. The rinsing control method includes rotating the drum to perform spin-drying and decelerating the drum to a predetermined velocity to perform rinsing. Consequently, it is possible to improve rinsing efficiency even using a small amount of water. Also, it is possible to uniformly distribute the laundry in the drum without eccentricity, although a laundry untangling process for spin-drying is performed only once during the rinsing, which is performed several times, thereby reducing the total rinsing time.

Abstract: Disclosed is the operation method of a washing machine, including: a washing step for washing laundry; a rinsing step for rinsing the laundry by supplying water after performing the washing step and including a remaining water removal process; and a final dehydrating step for dehydrating the laundry after performing the rinsing step. The detergent solution with a certain concentration remaining inside the washing machine can be removed through the remaining water removal process, thereby preventing the contamination of supplied clean water due to the detergent solution, thus to smooth the rinsing process of the laundry. In addition, a problem of detergent remnants in the laundry after the rinsing step can be solved.

Abstract: In an exemplary embodiment, a washing machine includes a tub having a bottom wall with a cavity therein, a basket rotatably mounted within the tub and rotatable around a vertical axis, and a multi speed drive system coupled to the basket. The drive system is configured to rotate the basket at a plurality of speeds. The washing machine also includes a brake system coupled to the basket. The brake system is configured to brake the rotation of the basket. The washing machine further includes at least one resistive heater element mounted in the cavity of the tub; and an inverter coupled to the drive system, the brake system, and the at least one resistive heater element.

Abstract: The invention relates to a method for detecting unbalanced conditions of a rotating load driven by a synchronous electric motor (3) in washing machines (1) and similar rotably drum (2) household appliances and wherein at least a transient step is provided with variation of the angular speed (w) of the rotably drum (2). The method provides the following steps: constantly monitoring the instantaneous current (Iq) absorbed by the motor calculating in real time the unbalanced mass (m) on the basis of the variation (?) of the current (Iq) and starting from a predetermined reference and by applying a calculation formula representative of the kind of load imbalance.

Abstract: Disclosed herein is a venting unit of a washing machine. The washing machine comprises a cabinet having a door mounted thereon, a water tub installed inside the cabinet, a washing tub installed inside the water tub; and a venting unit installed such that an outside of the cabinet is in communication with an inner space of the washing tub through the venting unit. The washing machine has improved drying efficiency.

Abstract: A washing machine control method includes executing a dewatering step. The method accelerates a motor to rotate a drum according to a predetermined rate in response to the dewatering execution step. The method detects if the predetermined rate exceeds a first value but is less than a second value, and whether a state of vibration exists with respect to the drum rotated according to the predetermined rate; and stops the motor if the detected state of vibration exists.

Abstract: A method of operating a drain pump in a laundry washing machine during the drain phase of the wash cycle to reduce pump blockages is disclosed. The method includes the steps of (a) starting the pump and running it for a first period of time to produce a discharge of a given flow rate, (b) stopping the pump and leaving the pump stopped for a second period of time, and repeating steps (a) and (b) for the duration of said drain phase, said second period of time being such that the flow rate reduces substantially to zero.

Abstract: An inner tub of a washing machine is rapidly braked during a portion of a deceleration phase following an extraction phase of an overall spin cycle. A controller establishes the braking operation over a critical speed band or resonant frequency zone during which excessive vibrations would be developed. The critical speed band is preferably determined based on one or more signals received from speed, load, and/or out-of-balance sensors.

Abstract: A power controller for an appliance, especially a washing machine, is operative to place the appliance into a hyperspin mode. When in the hyperspin mode, the washing machine rotates its washing basket at a higher speed in relation to a traditional spin mode for the washing machine. In order to prevent damage to the washing machine that could result from spinning heavier, unbalanced loads at higher speeds (i.e. hyperspin speeds), a controller detects vibration of the washing machine basket while the items are being spun at a lower speed (i.e. at the speed of the traditional spin mode). If the washing basket vibration is less than a predetermined threshold vibration value, the washing machine controller operates to cause the washing machine to rotate its washing basket at a higher speed. This results in removal of more water from the clothes being spun dried.

Abstract: The present invention relates a washing machine of direct drive pulsator manner that is directly connected to a motor. In this washing machine, the conversion of cleansing/dehydrating processes can be smoothly achieved by a floatage clutch capable of being actuated by floatage and gravity to be induced during the supply/drain of water.

Abstract: A drainage control device for washing machines is disclosed. This device controls the drain port, provided at the bottom of a washing tub, thus draining water from the washing tub in accordance with an operational mode of a washing machine. This drainage control device includes a first drive means containing a working fluid and operated in response to a change in volume of the working fluid, and a second drive means connected to the first drive means and controlling inflow and outflow of the working fluid relative to the first drive means. The first drive means comprises a first cylinder containing the working fluid, a first piston reciprocating within the first cylinder, a heating means used for heating the first piston, and an actuation rod operated in conjunction with both the first piston and the heating means to open or close the drain port.

Abstract: A clothes washing machine system including a method of detecting a load unbalance. The washing machine system includes a cabinet having a drum rotatably mounted therein. A motor is coupled to the drum for rotating the drum within the cabinet. A memory device is accessible by a processor, such as a digital signal processor (DSP). The memory contains program code for implementing a method that includes determining the motor torque ripple, determining the motor speed, and determining the load unbalance mass based on the motor torque and speed.

Abstract: A rotary speed control that is dependent on the instantaneous position of the entrainment members in the rotating drum affords a further degree of freedom in terms of introducing mechanical energy into the laundry that is being moved in the interior of the washing drum. By way of the intensity or duration of the washing operation, this permits additional optimization of the washing result, insofar as the interaction between the washing drum and the laundry now definedly varies over the rotation of the drum topography or the instantaneous drum movement can be adapted to the current condition of interaction between the entrainment member and the laundry.

Abstract: A method of detecting a dewatering unbalance of a washing machine and an operation control method using the same is provided, by which a system stability on dewatering is enhanced by controlling a dewatering speed to be appropriate for a state of unbalance that is quickly and accurately detected at an early stage of the dewatering. In a washing machine sequentially performing washing, rinsing, draining, and dewatering on a washing tub holding water and laundry therein, a method of detecting a dewatering unbalance of the washing machine, including a step of detecting an unbalance amount through a variation width of a rotational speed of the washing tub on performing the dewatering.

Abstract: Disclosed is a washing machine enabling to prevent foam from leaking. The present invention includes a housing, a tub installed in the housing to store water, the tub having at least one opening and at least one pipe connected to the at least one opening, a drum rotatably installed in the tub to hold a laundry therein for washing, and a valve assembly installed at the opening to selectively cut off the at least one pipe to prevent foam produced in the drum and the tub from leaking outside via the opening.

Abstract: A the washing machine control method employs a temperature sensor and a variable-speed motor. The water temperature of the final draining is sensed and compared to a predetermined temperature. Dewatering is performed at a reduce speed if the sensed temperature exceeds the predetermined temperature but is otherwise performed at the normal speed, thereby preventing the degradation of a washing machine using hot water for rinsing. The washing machine control method includes steps of supplying water to a tub for performing a final operational step; draining the water from the tub; sensing the temperature of the drained water; and controlling a dewatering speed according to the sensed water temperature.

Abstract: The present invention discloses a method for controlling a dehydration speed of a washing machine which can reduce vibrations and noises of the washing machine. The method for controlling the dehydration speed of the washing machine includes the steps of: setting the dehydration speed on the basis of an amount of laundry put into the washing machine; and controlling a rotation speed of a motor of the washing machine on the basis of the set dehydration speed.

Abstract: Disclosed are a method for controlling a driving of a drum type washing machine preventing vibration and noise of a drum, reducing a usage of washing water, and reducing rinse time, and an apparatus thereof. To this end, the drum is rotated with a preset equilibrium speed faster than a speed that vibration of the drum is excessively generated accordingly as a rotation speed of the drum is decreased when a dewatering process of laundry is completed, and washing water is supplied into the drum type washing machine while maintaining the drum as the preset equilibrium speed.

Abstract: Disclosed is a drum type washing machine, by which washing performance is increased as well as laundry damage and water pollution are reduced. The present invention includes a tub provided in a cabinet to hold water, a drum rotatably installed in the tub, at least one or more ceramics, and at least one or more ceramic receivers provided on an inside of the drum to hold the ceramic therein.

Abstract: Disclosed is a gasket and drum type washing machine using the same. The present invention includes a cabinet having a first opening through which a laundry is put in at a cabinet front side wherein a door is installed to open/close the first opening, a tub installed in the cabinet to have a second opening at a tub front side corresponding to the first opening, a drum installed in the tub to have a third opening at a drum front side corresponding to the second opening, a rotation mans having a rotational shaft penetrating a rear side of the tub to be connected to the drum, and a gasket for preventing leakage of water.

Abstract: A washing machine control method and a washing machine using the same are provided, by which the performance of a dewatering step is unimpeded and vibration and noise are prevented. The method includes steps of executing a dewatering step; accelerating a motor to rotate a drum, according to a predetermined rate, in response to the dewatering execution step; detecting, if the predetermined rate exceeds a first value but is less than a second value, whether a state of vibration exists with respect to the drum rotated according to the predetermined rate; and stopping the motor if the detected state of vibration exists. The method preferably includes steps of detecting an eccentricity value with respect to the drum rotated according to the predetermined rate; and comparing the detected eccentricity value to a reference eccentricity value stored in a lookup table.

Abstract: A washing machine having a dual-purpose sensor capable of detecting a degree of vibration generated during a dewatering step as well as measuring detergent levels present in the water. The washing machine having a sensor unit installed with respect to an outer tub for holding water. The washing machine includes a microcomputer having an input port receiving an applied voltage, the input port electrically connected to a supply voltage; first and second electrodes, installed so as to be submerged in the water of the outer tub, wherein the first electrode is electrically connected to the supply voltage and the second electrode is electrically connected to ground, to thereby generate the applied voltage for input to the input port of the microcomputer; a spherical conductor disposed adjacent to the electrodes; and a support for supporting the spherical conductor.

Abstract: A method of operating a drain pump in a laundry washing machine during the drain phase of the wash cycle to reduce pump blockages is disclosed. The method includes the steps of (a) starting the pump and running it for a first period of time to produce a discharge of a given flow rate, (b) stopping the pump and leaving the pump stopped for a second period of time, and repeating steps (a) and (b) for the duration of said drain phase, said second period of time being such that the flow rate reduces substantially to zero.

Abstract: A washing machine and a method of controlling the same by braking a spin-drying tub after interrupting the power of a motor for the spin-drying tub is disclosed. The washing machine comprises a mode selection unit for selecting a spin-drying mode, and a spin-drying timer for selecting a spin-drying time. The spin-drying timer includes a spin-drying switch and a motor control switch each having a different operation time. When the spin-drying mode is selected by the mode selection unit, the spin-drying switch of the spin-drying timer is connected to the solenoid of a drain motor and the motor control switch is connected to a motor driving circuit via a starting switch of the drain motor. As the motor control switch is turned off (the spin-drying switch is turned on) at a time earlier than a selected spin-drying time to interrupt power for the motor, the rotation speed of the spin-drying tub is reduced.

Abstract: Method for controlling a full automatic washing machine, the method comprising a washing cycle, a rinsing cycle, and a dewatering cycle, wherein the washing or the rinsing cycle includes the step of rotating an inner tub at a high speed higher than a preset speed in one direction, thereby making a centrifugal force caused by high speed rotation of the inner tub, to push laundry against a wall of the inner tub, to enforce washing water in the inner tub to penetrate through the laundry at a speed higher than required to make the washing done, and to pump the washing water penetrated through the laundry and discharged into an outer tub upward, to recirculate to the inner tub.

Abstract: The objective of the present invention is to provide a washing machine capable of removing earth/sand, waste thread, dust and the like stuck to the washing. In order to realize the objective, the washing machine is constituted so as to be operated as follows: overflowed washing water or rinsing water from washing/dehydrating tank to an annular drainage pipe by reciprocating revolutions of the tank is led to a side pipe, where the water is filtered and circulated to the tank by a pump arranged in the middle of the side pipe for utilizing the washing or the rinsing operation.

Abstract: A laundry appliance (100;200) comprises an outer housing (102;202) and a drum (122;222) rotatably mounted therein. The drum (122;222) comprises an inner wall (32;132;232,232a) and an outer wall (34;134;234,234a), the inner and outer walls (32,34;132,134;232,234;232a,234a) being perforated to allow washing liquid to flow into and out of the drum (122;222) via the perforations (42,44;42a,44a;42b,44b;42c,44c;42d,44d;42e,44e). According to the invention, the area of the perforations (44;44a;44b;44c;44d;44e) per unit area of the outer wall (34;134;234,234a) is greater than the area of the perforations (42;42a;42b;42c;42d;42e) per unit area of the inner wall (32;132;232,232a).

Abstract: An inner tub of a washing machine is rapidly braked during a portion of a deceleration phase following an extraction phase of an overall spin cycle. A controller establishes the braking operation over a critical speed band or resonant frequency zone during which excessive vibrations would be developed. The critical speed band is preferably determined based on one or more signals received from speed, load, and/or out-of-balance sensors.

Abstract: Apparatus for pressing liquid from a liquid containing material is disclosed including a pair of juxtaposed rotary rolls forming a nip, at least one of the rolls being liquid permeable, that roll including an abduction surface extending laterally across the roll so that a portion of the liquid stream pressed out form the liquid containing material passing through the nip runs along the abduction surface, a liquid collector for collecting that portion of pressed out liquid extending laterally across the roll and including a liquid inlet for the pressed out liquid stream, and a return flow protector for preventing the pressed out liquid stream from rewetting the reduced liquid material formed in the nip.